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    • 4. 发明授权
    • Image forming apparatus having cooling efficiency switching control
function
    • 具有冷却效率切换控制功能的图像形成装置
    • US4903072A
    • 1990-02-20
    • US197822
    • 1988-05-23
    • Yasuhiro Iwata
    • Yasuhiro Iwata
    • G03G15/00G03G21/00G03G21/20
    • G03G21/206
    • An image forming apparatus of the invention has a cooling fan which is used for forcibly decreasing a temperature raised by heat generated as a result a copying operation being performed, and which can be switched between high-speed/low-speed rotation modes. The image data on a document supported on an original table is exposed by an exposure lamp, regulated by a lamp regulator under the control of a main controller, and is optically scanned. The main controller forms an optical image corresponding to the image data on a photoconductive drum, develops it by means of a developing unit having a solenoid, and forms the developed image on a sheet. The image formed on the sheet is fixed by a fixing unit having a heater lamp under the control of a fixing unit controller. A cooling fan controller drives the cooling fan in a high-speed mode during the above copying operation and for a predetermined period of time after completion of the copying operation, thereby cooling the interior of the apparatus.
    • 本发明的图像形成装置具有冷却风扇,其用于强制地降低产生的热引起的温度,从而执行复印操作,并且可以在高速/低速旋转模式之间切换。 在原始台上支撑的文件上的图像数据由在主控制器的控制下由灯调节器调节的曝光灯曝光,并被光学扫描。 主控制器在感光鼓上形成对应于图像数据的光学图像,通过具有螺线管的显影单元显影,并在片材上形成显影图像。 形成在片材上的图像由具有加热灯的定影单元在定影单元控制器的控制下固定。 冷却风扇控制器在上述复印操作期间以高速模式驱动冷却风扇,并且在完成复印操作之后的预定时间段内驱动冷却风扇,由此冷却设备的内部。
    • 10. 发明授权
    • Auto-illuminating controller and image forming apparatus using the same
    • 自动照明控制器和使用其的成像设备
    • US4970556A
    • 1990-11-13
    • US212481
    • 1988-06-28
    • Yasuhiro Iwata
    • Yasuhiro Iwata
    • G03B27/72G03G15/00G03G15/04G03G15/043G03G15/36
    • G03G15/5025G03G15/043G03G15/36
    • An original scanning section has an illuminating source, and optically scans an original in the first direction to obtain a reflected light from the original. A designating section designates a desired range of the original as a designation area. Each of photosensors is arranged in the second direction perpendicular to the first direction so as to receive part of the reflected light and output a detection signal corresponding to a density of each portion of the original. A weighting operation section receives a designation output from the designating section, provides different weighting data for an inside area and an outside area of the designation area, receives each detection signal from the plurality of photosensors, operates each detection signal using the different weighting data, and outputs a density signal of the original. A control section receives the density signal from the weighting operation section and controls an illuminating amount of the illuminating source to be a correct value corresponding to the designation area and the density of each portion.
    • 原稿扫描部具有照明光源,并且在第一方向上对原稿进行光学扫描以获得原稿的反射光。 指定部分将原稿的期望范围指定为指定区域。 每个光电传感器布置在垂直于第一方向的第二方向上,以便接收反射光的一部分并且输出对应于原稿的每个部分的密度的检测信号。 加权操作部分接收从指定部分输出的指定,为指定区域的内部区域和外部区域提供不同的加权数据,从多个光电传感器接收每个检测信号,使用不同的加权数据操作每个检测信号, 并输出原稿的浓度信号。 控制部分接收来自加权操作部分的浓度信号,并且将照明源的照明量控制为对应于每个部分的指定区域和浓度的正确值。